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Battery protection integrated circuit, battery protection apparatus and battery pack

An integrated circuit and battery technology, applied in emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, etc., can solve the problem of easy decrease in solder wettability and decrease in thermal conductivity of wiring patterns and other problems, to achieve the effect of inhibiting the decline in wettability

Active Publication Date: 2016-12-21
MITSUMI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the conventional art described above, the wiring pattern connected to the central external connection terminal among the plurality of external connection terminals arranged in the long direction is located close to the bottom of the IC, so the heat conduction of the wiring pattern sex decline
Therefore, the wettability of the soldering of the external connection terminal and the wiring pattern in the central portion tends to decrease.

Method used

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  • Battery protection integrated circuit, battery protection apparatus and battery pack
  • Battery protection integrated circuit, battery protection apparatus and battery pack
  • Battery protection integrated circuit, battery protection apparatus and battery pack

Examples

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Embodiment Construction

[0030] Embodiments of the present invention will be described below with reference to the drawings.

[0031] figure 1 It is an external view showing an example of a lithium ion secondary battery pack. Such as figure 1 As shown, the lithium ion secondary battery pack 100 includes a lithium ion secondary battery 103 formed in a flat rectangular parallelepiped shape and a wiring board 101 on which a battery protection integrated circuit 104 is mounted. Lithium-ion secondary battery 103 has, for example, a width W of 25 mm to 40 mm and a thickness T of 2 mm to 6 mm. The wiring board 101 is formed into an elongated shape corresponding to the side shape of the battery, and a positive terminal (B+) and a negative terminal (B-) are formed at both ends of the mounting surface on which the battery protection integrated circuit 104 is mounted, and these terminals are respectively connected to lithium ion batteries. The positive terminal (B+) and the negative terminal (B−) of the secon...

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PUM

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Abstract

A battery protection integrated circuit includes a switch unit; a control unit that controls on and off of the switch unit based on a monitored result; a package; a plurality of external connection terminals that are electrically connected to a plurality of terminal portions of the switch unit and the control unit, respectively, all of the external connection terminals that are to be connected to a first terminal of a circuit board being provided at a first short side of the terminal providing surface that faces one of board short sides of a circuit board, and all of the external connection terminals that are to be connected to a second terminal of the circuit board being provided at a second short side that is opposite to the first short side, when being mounted on the circuit board.

Description

technical field [0001] The invention relates to a battery protection integrated circuit, a battery protection device and a battery pack. Background technique [0002] Conventionally, there is known a battery protection IC mounted on a wiring board mounted on a side surface of a battery having a flat rectangular parallelepiped outer shape (for example, refer to Patent Document 1). This battery protection IC has a plurality of external connection terminals arranged along the longitudinal direction of the rectangular wiring board when mounted on the rectangular wiring board. [0003] However, in the conventional art described above, the wiring pattern connected to the central external connection terminal among the plurality of external connection terminals arranged in the long direction is located close to the bottom of the IC, so the heat conduction of the wiring pattern sex decline. Therefore, the wettability of the soldering of the external connection terminal and the wiri...

Claims

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Application Information

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IPC IPC(8): H01M10/48H02H7/18H01M50/574
CPCH01M10/4264H01M10/48H02H7/18H01M50/574H01M10/425H02H9/025H02J7/0031H01M10/0525H01M2200/00Y02E60/10H05K1/02
Inventor 田中伸史川口德仁
Owner MITSUMI ELECTRIC CO LTD
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